he is so educated with rock 'n' roll music. he knows way more about it than i do. >> what did you listen to? >> everything. we had an xm station we listened to. i don't even remember. we would play air guitar. and we were just jam out and head-bang, really, in the car, between takes. so, he really made my job incredibly easy. >> you've been in the news a lot because you just got -- you're a newlywed. >> yes, i am. >> what is the best part of being married to justin timberlake right now? just being married. the best part? >> it's funny. it feels like nothing's changed and everything's changed. it's that intangible thing. you can't quite put your finger on it. i guess the idea of having sort of a partner in crime. and i guess the word husband is pretty amazing. >> still getting used to it? >> yes. and loving it. it's so fun to say, this is my husband. >> and your first christmas as a newlywed. what kind of christmas traditions -- i know you take the heads of barbie dolls and decorate your tree. >> i'm using the old ones i mutilat